Portion of a shoe upper



FIG. 1 is a front perspective view of a portion of a shoe upper showing my new design;

FIG. 2 is a left side view thereof;

FIG. 3 is a right side view of one side thereof;

FIG. 4 is a front view thereof; and,

FIG. 5 is a top view thereof.

The uneven broken line showing the remainder of the shoe is for illustrative purposes only and forms no part of the claimed design. The contrast in shading represents a change in material, texture or color. The uneven broken line immediately adjacent to the shaded area represents a portion of an unclaimed boundary of the design. 

The ornamental design for a portion of a shoe upper, as shown and described. 